Mean voltage
Global mean voltage of maps in AF was significantly lower than mean voltage of maps in SR: 0.62 mV ±0.27 mV vs. 1.62 mV ±0.7 mV (p<0.001). When we selected areas with voltage lower than 0.5mV, significant differences in mean voltage were not observed between both types of maps (0.277 mV ±0.02 mV vs. 0.272 mV ±0.01 mV, p 0.27). No differences were found either in mean voltage in areas with voltage lower than 0.3 mV (0.192 mV ±0.008 mV in maps in AF vs. 0.92 mV ±0.007 mV in maps in SR, p 0.448).